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प्रश्न
Find a if the coefficients of x2 and x3 in the expansion of (3 + ax)9 are equal.
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उत्तर
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संबंधित प्रश्न
Expand the expression: `(2/x - x/2)^5`
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Expand the expression: `(x/3 + 1/x)^5`
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(99)5
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Determine whether the expansion of `(x^2 - 2/x)^18` will contain a term containing x10?
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If a1, a2, a3 and a4 are the coefficient of any four consecutive terms in the expansion of (1 + x)n, prove that `(a_1)/(a_1 + a_2) + (a_3)/(a_3 + a_4) = (2a_2)/(a_2 + a_3)`
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Given the integers r > 1, n > 2, and coefficients of (3r)th and (r + 2)nd terms in the binomial expansion of (1 + x)2n are equal, then ______.
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Number of terms in the expansion of (a + b)n where n ∈ N is one less than the power n.
Let the coefficients of x–1 and x–3 in the expansion of `(2x^(1/5) - 1/x^(1/5))^15`, x > 0, be m and n respectively. If r is a positive integer such that mn2 = 15Cr, 2r, then the value of r is equal to ______.
The sum of the last eight coefficients in the expansion of (1 + x)16 is equal to ______.
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